JPH01264321A - Mobile communication connecting system - Google Patents

Abstract

PURPOSE:To automatically perform the reconnection of a radio channel and to continue a call by providing a memory to store the number of a caller and that of a callee, a function to measure electric field intensity, and an automatic outgoing function, and performing re-call issuing after recovering electric field intensity when disconnection due to the reduction of the electric field intensity occurs. CONSTITUTION:In case of issuing a call to a mobile terminal, an opposite number in busy is stored in a memory part 109. In case of receiving the call from the mobile terminal, the telephone number of a call issuing subscriber is transmitted to a call receiving subscriber before starting the call, and a call opposite number is stored in the memory part 109. When the disconnection due to the deterioration of a line occurs, a control part 107 monitors the state of the radio channel by a monitoring part 105, and when the mobile terminal goes out from a tunnel, etc., the re-call issuing is performed based on the opposite number stored in the memory part 109 after the recovery of the radio channel is confirmed, thereby, the call with a called party can be continued again.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for continuing communication in mobile communications such as car telephones and marine telephones when radio waves are interrupted.

(Prior Art) Conventionally, when wireless radio waves are interrupted during communication and communication is no longer performed, the user dials again to make a call again. However, the user has to judge whether the radio waves have been restored by looking at the field strength lamp on the device, and when the wireless radio waves are cut off for a long time, they cannot keep looking at the lamp forever. There were many. Also, when you make a call, the redial function makes it easy to redial, but it is extremely troublesome when you receive an incoming call.

(Problems to be Solved by the Invention) The present invention eliminates the above-mentioned drawbacks, and even if the radio waves are cut off during a call, the user does not need to perform any operation, and when the radio waves are restored, the call is automatically stopped. The purpose is to provide a method that can be continued.

(Means for Solving the Problems) A feature of the present invention is that a mobile terminal is provided with a storage means for storing the number of the other party with which communication is attempted or the number of the other party with which communication is attempted, and radio waves are transmitted when communication is attempted. A mobile communication connection that automatically re-calls according to the contents of the storage means after confirming that the radio waves have been restored at the mobile terminal when the communication is terminated due to interruption of the radio waves or interruption of the radio waves during communication. It's in the method.

(Function) According to the present invention, a mobile terminal is provided with a memory for storing a calling party's number and a called party's number, a function of measuring electric field strength, and an automatic calling function. In the event of disconnection due to a decrease in electric field strength, a call is automatically made again after the electric field strength is restored.Therefore, the drawbacks of the prior art are improved and the object of the present invention is achieved.

(Embodiment) FIG. 1 is an embodiment of the present invention, showing the configuration of a mobile terminal.
101 is a wireless section, 102 is a wired section, 103 is a receiver, 1
04 is a transmitter, 105 is a monitoring section, 106 is a signal section, 10
7 is a control section, 108 is a dial section, and 109 is a memory section.

FIG. 2 shows the control flow of the mobile terminal.

First, we will explain the control of the mobile terminal when a call is made from the mobile terminal.
200) When a signal sending button (not shown) of the dialing section 108 is pressed, the control section 107 stores the dialed number in the memory section 109 (202).

The control unit 107 uses the monitoring unit 105 to confirm that the wireless line that sends the dial signal is normal, and sends the dial signal from the signal unit 106 to the switching center (not shown) via the wireless unit 101. call; 204).

If the electric field strength of the radio line through which the dial signal is sent is low, wait until it becomes good before transmitting the dial signal. Of course, if there are predetermined procedures such as wireless channel selection and line settings before sending out the dial signal, it goes without saying that those procedures must be followed.

When the line is connected, a call is made (206), and if the call is normally terminated (208), the call is terminated (224).

Next, a case where a call is in progress will be explained. In the case of a mobile terminal call, as mentioned above, the number of the party being called is stored in the memory unit 10.
It is stored in 9. If the mobile terminal enters a tunnel or the like during a call and the radio waves are cut off, if the radio waves continue to be cut off for a certain period of time (210), the switching center forcibly disconnects the call line (216).

For example, when the uplink deteriorates, the exchange detects that this deterioration has continued for a certain period of time and sends a forced disconnection signal to the mobile terminal (214).On the other hand, when the downlink deteriorates, the mobile terminal It is detected that this deterioration has continued for a certain period of time, and a forced disconnection request signal (212) is sent to the switching center to disconnect the call. In tunnels, both the upstream and downstream lines degrade, so these signals cannot reach the other party, but the exchange station.

Both mobile terminals disconnect the line at independent timing. In either case, the mobile terminal determines that the disconnection is due to line deterioration and is not due to normal termination.If the disconnection is due to line deterioration, the control unit 107 uses the monitoring unit 105 to monitor the state of the wireless line. When the recovery of the wireless line is confirmed (218), the memory unit 10
A re-call (220) is made using the number of the other party stored in 9 to continue the conversation with the other party.

Next, the case of an incoming call from a mobile terminal will be explained. - In general telephone calls, the telephone number of the calling subscriber is not sent to the called party. However, the digital telephone network (ISDN)
In this case, the telephone number of the calling subscriber is transferred to the called subscriber.
Can be communicated before the call starts (CCITT Recommendation Q)
, 931/1.451).

In this case, it is easy for the control unit 107 to store the caller's telephone number in the memory unit 109.

If the calling party number is stored in the memory unit 109,
In the same manner as in the case of mobile terminal call origination, in the case of disconnection due to deterioration of one line, reconnection from the mobile terminal is possible after detecting recovery of the wireless line. In this case, the call is made by the mobile terminal, so there is a drawback that charges will be incurred on the mobile terminal, but if it is a digital telephone network (ISDN), the connection will be made with the mobile terminal requesting incoming call charges, and the connection will be the same as before disconnection. It is also easy to charge the fee on the side.

(Effects of the Invention) As explained above, in mobile communications, when the wireless line deteriorates during a call and the line is disconnected, there is no need to confirm that the wireless line has recovered or to redial. This is extremely effective because it allows you to automatically reconnect the wireless line and continue one call by simply waiting.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the present invention, which is a configuration diagram of a mobile terminal, and FIG. 2 is a control flow at the mobile terminal. 101... Wireless section, 102... Wired section, 103...
・Telephone receiver, 104...Telephone receiver, 105...Monitoring unit,
106... Signal section, 107... Control section, 108...
-Dial section, 109...memory section.

Claims (1)

[Scope of Claims] In mobile communications, a mobile terminal is provided with a storage means for storing the number of the party with whom communication is attempted or the number of the party with whom communication is being made, and whether radio waves are interrupted when communication is attempted. or when the communication is terminated due to interruption of the radio waves during communication, after confirming that the radio waves have been restored at the mobile terminal, a mobile communication connection is characterized in that the call is automatically performed again according to the contents of the storage means. method.